Sash-balance



No Model.)

J. T. SANDS. SASH BALANCE.

No. 656,696.- Patented Mar. 17, 1896.

ANDREW IGIM'MH. rum-mawumumom 0C ATENT F F ICE.

JAUES THOMAS SANDS, OF ST. LOUIS, MISSOURI.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 556,696, dated March 17, 1896.

Application filed July 8, 1895. Serial N- 555,192. (No model.)

To aZZ whom it may concern.-

Be it known that I, J iii [Es THOMAS SANDS, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in a Sash-Balance, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to a sash-balance, and is an improvement on a sash-balance a patent for which was granted to Francis M. Baker and myself on May 6, 1890, and numbered 427,389.

My invention consists in the novel construction, combination and arrangement of parts hereinafter described and claimed.

In the drawings, Figure 1 is a horizontal sectional view of one side of awindow-frame, the same having my improved sash-balance applied thereto. Fig. 2 is a horizontal sectional view of a portion of the frame, the same having a modified form of my improved device therein. Fig. 3 is a view in perspective of one of the weights used inmy improved sash-balance. Fig. 4 is a detail View in perspective, showing the construction of the vertical rails of the sash used in connection with my improved device. Fig. 5 is a view in perspective of one of the sets of guides used in the preferred form of my improved device. Fig. i is a detail view in perspective, showing one of the pinions located in the stileboard that is used in my device. Fig. 7 is a detail view in perspective, showing a modifled form of the vertical guides.

Referring by numerals to the accompanying drawings, 1 1 indicate the face-casings of the window-frame, 2 the stile-board thereof, and 3 3 the ordinary window-sash arranged for vertical movement upon the stile-board and held in such position by stops 4. A partingstrip 5 is located between said sash 3.

Formed in the stile-board 2 in alignment with the sash 3 are slots 6, and located in the faces of the stile-board 2 on each side of said slots are bearings 7, in which are mounted for rotation shafts 8, said shafts carrying pinions 9 that operate through the slots G.

Formed in the faces of the vertical rails of the sash 3 are racks or cog-teeth 10, with which the teeth of the pinions 9 engage.

ll 11 indicate vertical guide-rods that are located suitable distances apart, and said guide-rods are provided adjacent their top and bottom ends with arms 12 that project laterally from said guide-rods, and formed integral with the ends of said arms 12 are perforated cars 13 that are located directly against the inner face of the rear wall of the window-casing. Suitable fastening devices pass through said perforated ears and thus firmly position said guide-rods.

14 indicates the weights used in my sashbalance, said weights being preferably rectangular tubes having closed bottoms, and on one of the faces of each of said weights is formed a rack or series of teeth 15, with which the teeth of the pinion 9 engage.

Formed integral with and projecting laterally from each of the weights 14, adjacent their top and bottom ends and on their opposite sides, are lugs 16, in the outer ends of which are formed semicircular bearing-faces 17 that engage and ride directly upon the vertical guide-rods 11. Additional weights in the form of slugs or small blocks of metal may be located within these hollow weights 14, in order to cause the same to counterbalance the weight of the sash. 1

In the modified form of the device shown in Figs. 2 and 7 the vertical guide-rods 11 are not secured to the rear wall of the casing, but have their upper and lower ends located in plates 18 that are secured directly to the top and bottom pieces used in forming the casing.

In some instances suitable racks may be formed and located directlyupon the vertical rails of the sash, thus doing away with the necessity of forming the teeth directly upon the faces of the said vertical rails.

VVindow-sash equipped with my improved balance may be easily raised and lowered, and it will be readily perceived that when either the lower or upper sash of the window be moved the weights 1% in alignment with said window-sash will be moved in the opposite direction, as the pinion 9 meshes with the teeth 10 in the vertical rail of the sash and with the teeth formed integral with the weight 14.

My improved balance may be easily applied to Windows of ordinary construction without materially altering the frame of said windows, and the weights used in my improved balanc may be made heavier or lighter to suit the different weights of sash. Thus it willbe seen how I have constructed an improved sashbalance that possesses superior advantages in point of simplicity, durability, and general efficiency, is inexpensive and very easily operated.

In some instances the removable rear walls of the casings may be passed through a suitable machine and the vertical guides formed integral therewith. Then this is done, the rods 11 are necessarily dispensed with.

I claim- 1. In a device of the class described, the combination of a series of guide-rods vertically arranged within the window-frame, and balancing-weights having toothed racks cast integral with their front faces and lugs cast integral with their sides in which lugs are semicircular bearing-faces that engage against the vertical guide-rods.

2. In a device of the class described, the combination of a detachable rear wall for the window-casing, parallel guide-rods arranged upon the inner face of said rear wall, and tubular balancing -weights having integral lugs on their side faces that engage with the vertical guide-rods.

In testimony whereof I affix my signature in presence of two Witnesses.

JAMES THOMAS SANDS.

Vitnesses:

HAUD GRIFFIN, EDWARD E. LONGAN. 

